feat(args): add --skip-tags cli argument

[ooooo-create]

Description

Adds --skip-tags argument to cli.

Motivation and Context

fixes #1313

How Has This Been Tested?

Add a new fixture in .github/fixtures/test-cli-arg-skip-tags according to .github/fixtures/README.md.

Screenshots / Logs (if applicable)

Types of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (no code change)
• Refactor (refactoring production code)
• Other

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly.
• I have formatted the code with rustfmt.
• I checked the lints with clippy.
• I have added tests to cover my changes.
• All new and existing tests passed.

[welcome]

Thanks for opening this pull request! Please check out our contributing guidelines! ⛰️

[Copilot]

Pull request overview

This PR adds a new --skip-tags CLI argument to git-cliff, allowing users to skip specific tags matching a regex pattern in the generated changelog. This complements the existing --ignore-tags functionality.

Key Changes:

• Added new skip_tags CLI argument with environment variable support
• Integrated the argument into the configuration processing logic
• Added comprehensive test fixtures to validate the functionality

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
git-cliff/src/args.rs	Defines the new skip_tags CLI argument with proper clap attributes
git-cliff/src/lib.rs	Processes the skip_tags argument and updates the configuration
website/docs/usage/args.md	Documents the new CLI argument (contains naming inconsistency)
website/docs/configuration/git.md	Documents the configuration override (contains naming inconsistency)
.github/workflows/test-fixtures.yml	Adds test case for the new argument
.github/fixtures/test-cli-arg-skip-tags/expected.md	Expected output for the test fixture
.github/fixtures/test-cli-arg-skip-tags/commit.sh	Test setup script creating commits and tags
.github/fixtures/test-cli-arg-skip-tags/cliff.toml	Configuration file for the test fixture

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.40%. Comparing base (0cec8a0) to head (6fdc138).

Files with missing lines	Patch %	Lines
git-cliff/src/lib.rs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1334      +/-   ##
==========================================
- Coverage   43.48%   43.40%   -0.08%     
==========================================
  Files          23       23              
  Lines        2245     2247       +2     
==========================================
- Hits          976      975       -1     
- Misses       1269     1272       +3     

Flag	Coverage Δ
unit-tests	43.40% <0.00%> (-0.08%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[orhun]

LGTM, thanks!

[welcome]

Congrats on merging your first pull request! ⛰️